225611939912 has 36 divisors (see below), whose sum is σ = 430227141435. Its totient is φ = 110916387840.

The previous prime is 225611939909. The next prime is 225611939933. The reversal of 225611939912 is 219939116522.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 93431703556 + 132180236356 = 305666^2 + 363566^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=335866.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 81949928 + ... + 81952680.

Almost surely, 2^225611939912 is an apocalyptic number.

It is an amenable number.

225611939912 is a deficient number, since it is larger than the sum of its proper divisors (204615201523).

225611939912 is an frugal number, since it uses more digits than its factorization.

225611939912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5634 (or 2816 counting only the distinct ones).

The product of its digits is 524880, while the sum is 50.

Multiplying 225611939912 by its sum of digits (50), we get a square (11280596995600 = 3358660²).

The spelling of 225611939912 in words is "two hundred twenty-five billion, six hundred eleven million, nine hundred thirty-nine thousand, nine hundred twelve".